Re: i2c device scan/list

[Paul Goyette <paul%whooppee.com@localhost>]

I use 'options I2C_SCAN' all the time with no problem.  However, there 
are devices that can hang the bus when probed.  See the warning on the 
options(4) man page.


On Mon, 20 Dec 2010, Jukka Ruohonen wrote:

> On Wed, Dec 08, 2010 at 01:50:14PM +0530, Gnanasekar Loganathan wrote:
> > Is there any command to list or scan the i2c devices attached in the
> > NetBSD5 kernel?
>
> The iic(4) manual page lists quite a few devices, although it is not
> entirely comprehensive.[*]
>
> But if you mean whether it is possible to scan the I2C devices possibly
> available on the machine, I believe no such functionality exists, at least
> by default. However, if you take a peek at iic(9) and 'src/sys/dev/i2c/i2c.c',
> there is a #ifdef I2C_SCAN. I haven't tried it, so I do not know how well it
> works.
>
> - Jukka.
>
> [*] Apparently that page is only available on -current; here see
>    http://netbsd.gw.com/cgi-bin/man-cgi?iic++NetBSD-current
>
> !DSPAM:4d0f1f802367187616971!

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